CN115046762A - Slewing bearing overturning moment loading and testing test bed and testing method - Google Patents
Slewing bearing overturning moment loading and testing test bed and testing method Download PDFInfo
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- CN115046762A CN115046762A CN202210640668.7A CN202210640668A CN115046762A CN 115046762 A CN115046762 A CN 115046762A CN 202210640668 A CN202210640668 A CN 202210640668A CN 115046762 A CN115046762 A CN 115046762A
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- test bed
- slewing bearing
- overturning moment
- bed body
- testing device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
Abstract
The invention discloses a slewing bearing overturning moment loading and testing test bed and a test mode in the technical field of industrial detection equipment, and the test bed comprises a base, wherein an oil cylinder support is arranged at the top of the base, a hydraulic oil cylinder is arranged at the inner side of the oil cylinder support, a push rod support is arranged at the top of the base, an overturning moment loading oil cylinder is arranged at the inner side of the push rod support, a bearing table is arranged at the top of the base, a slewing bearing to be tested is arranged on the inner wall of the bearing table, the output end of the hydraulic oil cylinder is connected with a flexible pressure head, and a motor frame is arranged at the top of the base, so that the problems that the slewing bearing test bed used in the prior art is complicated in installation of slewing bearings with different models, inaccurate in detection results caused by manual operation experience and the like are solved, and the overturning moment parameter change of the slewing bearings with different models under different stress conditions can be simulated and tested, the test result is reliable, and the reliability and the safety performance of the slewing bearing in formal service can be effectively ensured.
Description
Technical Field
The invention relates to the technical field of industrial detection equipment, in particular to a slewing bearing overturning moment loading and testing test bed and a test mode.
Background
With the continuous development of the economic globalization and the logistics industry, the development of modern port transportation machinery towards large-scale, continuous, high-efficiency, automation and the like is promoted. The slewing bearing is used as a joint of engineering machinery, is a key component for finishing slewing motion of equipment such as a tower crane, a door seat, a floating crane, a cantilever crane, a crawler crane and the like, is a core component for connecting a rotating part and a fixed part and simultaneously realizing that the rotating part finishes slewing motion relative to the fixed part.
The slewing bearing generally works in a severe environment, has high working frequency, usually bears larger impact load in the operation process, has various faults, and causes the complete machine to lose efficacy or even major accidents, and the slewing bearing has large size and high price, so spare parts are not usually stored; during maintenance, objects with dozens of tons or even hundreds of tons at the upper part need to be lifted by a certain height during disassembly for maintenance, so that the maintenance difficulty is high, the cost is high, the downtime is long, and the loss is large. Therefore, it is important to effectively ensure the reliability and safety of the slewing bearing in the formal service.
In the prior art, the slewing bearing usually adopts a manual measurement method, clamps with different specifications are required for slewing bearings with different specifications, a measuring instrument cannot be used universally, the installation and adjustment time is long, and the detection efficiency is low; the controllability of load simulation loading is poor, the result of detected overturning moment is easy to cause inaccuracy, unqualified slewing bearings flow into the market for use, and quality accidents are caused.
Therefore, a slewing bearing overturning moment loading and testing test bed and a test mode are provided.
Disclosure of Invention
The invention aims to provide a slewing bearing overturning moment loading and testing test bed and a testing method, which aim to solve the problems in the background technology.
The invention aims to solve the problems that a slewing bearing test bed used in the prior art is complicated in installation for testing various slewing bearings of different types, inaccurate in detection result caused by manual skill experience and the like, can simulate and test the parameter change of the overturning moment of the slewing bearings of different types under different stress conditions, is reliable in test result, can effectively ensure the reliability and safety performance of the slewing bearing in formal service, and provides the slewing bearing overturning moment loading and testing test bed and the testing method.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a slewing bearing overturning moment loading and test bench and test mode, includes the base, the top of base sets up the hydro-cylinder support, the inboard of hydro-cylinder support sets up hydraulic cylinder, the top of base sets up the push rod support, the inboard of push rod support sets up overturning moment loading hydro-cylinder, the top of base sets up the bearing platform, the inner wall of bearing platform sets up the slewing bearing that awaits measuring, flexible pressure head is connected to hydraulic cylinder's output, the top of base sets up the motor frame, the inboard of motor frame sets up variable frequency speed motor, variable frequency speed motor's output passes through the speed reducer and connects the initiative driving medium, the top of base sets up the slide rail, the inner wall activity of slide rail sets up the slider, and variable frequency speed motor sets up the top at the slider.
Furthermore, the hydraulic oil cylinders are three groups, and the three groups of hydraulic oil cylinders are arranged in an annular array at intervals of 120 degrees.
Furthermore, the bottom of the outer ring of the slewing bearing to be tested is connected to the lower surface of the bearing table, and the central axes of the bearing table and the slewing bearing to be tested are coincided.
Furthermore, the driving transmission part is a straight-tooth gear, and tooth grooves matched with the straight-tooth gear are uniformly formed in the inner wall of the slewing bearing to be detected.
Furthermore, an axial acceleration sensor and a radial acceleration sensor are arranged on the outer ring of the slewing bearing to be tested, four groups of the axial acceleration sensors and four groups of the radial acceleration sensors are respectively arranged on the outer ring of the slewing bearing to be tested, and the axial acceleration sensors and the radial acceleration sensors are uniformly distributed along the circumferential direction of the outer ring of the slewing bearing to be tested at intervals of 90 degrees.
Furthermore, the bottom of base sets up the shock insulation pad, and the shock insulation pad is rubber shock insulation pad.
Compared with the prior art, the invention has the beneficial effects that:
firstly, the slewing bearing test bed provided by the invention has the advantages that under the driving of the driving mechanism, the inner ring of the slewing bearing can rotate, the normal working condition is simulated, and the overturning moment borne by the slewing bearing is detected under the more real condition; according to the invention, the size of the clamp can be adjusted by changing the oil inlet amount of the hydraulic cylinder, so that the test requirements of slewing bearings of different models are met, and the rotating speed of the inner ring of the slewing bearing to be tested is controlled by adjusting the frequency of the variable-frequency speed-regulating motor, so that the loading condition of the slewing bearing to be tested under the normal service condition can be simulated more truly, and the test result is more reliable.
The variable-frequency speed regulating motor and the active transmission member are connected through the torque sensor, so that the torque sensor can be used for monitoring the torque change of the slewing bearing to be tested under different loading conditions in real time.
The slewing bearing overturning moment testing method of the invention adopts glue to stick the acceleration sensor to the outer ring of the slewing bearing without damaging the inner and outer ring surfaces of the slewing bearing and the vibration characteristics of the slewing bearing, and the vibration isolation device is arranged on the lower surface of the base, so that the influence of the vibration generated by the motor on the testing result can be reduced, and the accuracy of the testing result is improved.
The slewing bearing test bed provided by the invention has the advantages of reasonable structural design, simple principle and convenience in popularization and use, and can be simultaneously suitable for performance test of the toothed slewing bearing and the toothless slewing bearing.
Drawings
FIG. 1 is a schematic structural diagram of a slewing bearing test bed according to the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a perspective view of the present invention with the bearing table and slewing bearing removed;
fig. 4 is a specific installation layout of the sensor.
In the figure: 1. an overturning moment loading oil cylinder; 2. a push rod support; 3. a hydraulic cylinder; 4. a bearing table; 5. a slewing bearing to be tested; 6. a base; 7. a cylinder support; 8. a variable frequency speed regulating motor; 9. a flexible indenter; 10. a slider; 11. a motor frame; 12. an active transmission member; 13. a slide rail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a slewing bearing overturning moment loading and testing test bed and a testing mode comprise a base 6, wherein a cylinder support 7 is arranged at the top of the base 6, a hydraulic cylinder 3 is arranged on the inner side of the cylinder support 7, a push rod support 2 is arranged at the top of the base 6, an overturning moment loading cylinder 1 is arranged on the inner side of the push rod support 2, a bearing table 4 is arranged at the top of the base 6, a slewing bearing 5 to be tested is arranged on the inner wall of the bearing table 4, the output end of the hydraulic cylinder 3 is connected with a flexible pressure head 9, the hydraulic cylinder 3 is connected with a power supply through a control switch to operate the hydraulic cylinder 3, the overturning moment loading cylinder 1 and a variable frequency speed regulating motor 8, the hydraulic cylinder 3 can drive the flexible pressure head 9 to be telescopically regulated during operation, so as to fixedly mount the slewing bearing 5 to be tested, a motor frame 11 is arranged at the top of the base 6, the variable frequency speed regulating motor 8 is arranged on the inner side of the motor frame 11, the output end of the variable frequency speed regulating motor 8 is connected with a driving transmission piece 12 through a speed reducer, the top of base 6 sets up slide rail 13, the inner wall activity of slide rail 13 sets up slider 10, and variable frequency speed motor 8 sets up the top at slider 10, variable frequency speed motor 8 can be through the slider adjusting position that slides on the top of slide rail 13, thereby the pivoting support 5 that awaits measuring is connected in the meshing, can change the position of variable frequency speed motor 8 according to the pivoting support 5 model size that awaits measuring through slide rail 13, satisfy various models and wait the relevant test of pivoting support.
Referring to fig. 1, 2 and 3, the three hydraulic cylinders 3 are three groups, the three groups of hydraulic cylinders 3 are arranged at intervals of 120 degrees in an annular array, the slewing bearing test bed adopts three groups of hydraulic cylinders which are adjacently arranged at 120 degrees as clamping mechanisms, the extending length of the hydraulic cylinders can be determined according to the diameter size of the bearing, and the test bed can meet the test of slewing bearings with various specifications;
referring to fig. 1 and 2, the bottom of the outer ring of the slewing bearing 5 to be tested is connected to the lower surface of the bearing table 4, and the central axes of the bearing table 4 and the slewing bearing 5 to be tested coincide with each other, so that the slewing bearing 5 to be tested is conveniently fitted with the bearing table 4;
referring to fig. 1 and 2, the driving transmission member 12 is a straight-tooth gear, tooth grooves matched with the straight-tooth gear are uniformly formed in the inner wall of the slewing bearing 5 to be tested, and the driving transmission member 12 is connected to the inner ring of the slewing bearing 5 to be tested in a meshed manner, so that the inner ring of the slewing bearing is conveniently driven to rotate to complete the test;
the outer ring of the slewing bearing 5 to be tested is provided with the axial acceleration sensors and the radial acceleration sensors, the axial acceleration sensors and the radial acceleration sensors are respectively provided with four groups, and the axial acceleration sensors and the radial acceleration sensors are uniformly distributed along the circumferential direction of the outer ring of the slewing bearing 5 to be tested at intervals of 90 degrees, so that the vibration condition of the slewing bearing can be comprehensively reflected;
the bottom of base 6 sets up the shock insulation pad, and the shock insulation pad is rubber shock insulation pad for reduce the vibrations that the motor produced and to the interference of test.
The embodiment is as follows: the slewing bearing 5 to be tested is installed on the top of the base 6, the lower surface of the bearing table 4 is fixed on the upper surface of the slewing bearing 5 to be tested in a pressing mode and fixedly connected, different loads are applied to the slewing bearing 5 to be tested through the bearing table 4 by the aid of the overturning moment loading oil cylinder 1, loading conditions of the slewing bearing 5 to be tested under normal service conditions can be simulated really, moment changes of the slewing bearing 5 to be tested under different loading conditions are monitored in real time through the moment sensor, testing is more accurate, reliable operation and safe use of the slewing bearing can be guaranteed, and accidents are prevented.
The rotating speed of the inner ring of the slewing bearing to be tested 5 can be controlled by adjusting the frequency of the variable-frequency speed-regulating motor 8, so that the torque change of the slewing bearing to be tested 5 under different loads at different rotating speeds can be tested.
In the test, the slewing bearing drives the slewing bearing 5 to be tested to slew by the driving transmission piece 12, for example, the inner ring is provided with teeth, the inner ring is fixed by rotating the outer ring, and the specific installation arrangement of the sensor is shown in fig. 4;
the straight gear drives the inner ring of the slewing bearing 5 to be tested to rotate, the outer ring is fixed, the acceleration sensors are arranged along the outer ring of the slewing bearing fixing ring, so that the vibration signal of the slewing bearing to be tested can be obtained as much as possible, the on-site wiring is convenient, the vibration conditions of different parts of the inner ring and the outer ring of the slewing bearing are different, 4 axial acceleration sensors and 4 radial acceleration sensors are respectively adopted, and the sensors are uniformly arranged at positions at intervals of 90 degrees along the circumferential direction of the outer ring of the slewing bearing, so that the vibration condition of the slewing bearing can be comprehensively reflected.
During field installation, the acceleration sensor is attached to the outer ring surface of the slewing bearing by glue in consideration of not damaging the inner and outer ring surfaces of the slewing bearing and the vibration characteristics of the slewing bearing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a slewing bearing overturning moment loading and test bench and test mode, includes base (6), its characterized in that: the top of the base (6) is provided with an oil cylinder support (7), the inner side of the oil cylinder support (7) is provided with an oil cylinder (3), the top of the base (6) is provided with a push rod support (2), the inner side of the push rod support (2) is provided with an overturning moment loading oil cylinder (1), the top of the base (6) is provided with a bearing table (4), the inner wall of the bearing table (4) is provided with a slewing bearing (5) to be tested, the output end of the hydraulic oil cylinder (3) is connected with a flexible pressure head (9), the top of the base (6) is provided with a motor frame (11), the inner side of the motor frame (11) is provided with a variable frequency speed motor (8), the output end of the variable frequency speed motor (8) is connected with a driving transmission part (12) through a speed reducer, the top of the base (6) is provided with a slide rail (13), and the inner wall of the slide rail (13) is movably provided with a slide block (10), and the variable-frequency speed-regulating motor (8) is arranged at the top of the sliding block (10).
2. The slewing bearing overturning moment loading and testing test bed and the testing method according to claim 1, wherein the test bed comprises a test bed body, a test bed body and a test platform body, wherein the test bed body comprises a test bed body, a test bed body and a test bed body, the test bed body is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a test bed body, and the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a slewing bearing overturning moment testing device, the test bed is provided with a testing device, the test bed is provided with a testing device, and is provided with a testing device, the test bed is provided with a testing device, and is provided with a slewing bearing overturning moment testing device, the test bed is provided with a slewing bearing overturning moment testing device, the test bed is provided with a slewing bearing overturning moment testing device, and is provided with a: the hydraulic oil cylinders (3) are three groups in total, and the three groups of hydraulic oil cylinders (3) are arranged in an annular array at intervals of 120 degrees.
3. The slewing bearing overturning moment loading and testing test bed and the testing method according to claim 1, wherein the test bed comprises a test bed body, a test bed body and a test platform body, wherein the test bed body comprises a test bed body, a test bed body and a test bed body, the test bed body is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a test bed body, and the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a slewing bearing overturning moment testing device, the test bed is provided with a testing device, the test bed is provided with a testing device, and is provided with a testing device, the test bed is provided with a testing device, and is provided with a slewing bearing overturning moment testing device, the test bed is provided with a slewing bearing overturning moment testing device, the test bed is provided with a slewing bearing overturning moment testing device, and is provided with a: the bottom of the outer ring of the slewing bearing (5) to be tested is connected to the lower surface of the bearing table (4) in a connecting mode, and the central axes of the bearing table (4) and the slewing bearing (5) to be tested are overlapped.
4. The slewing bearing overturning moment loading and testing test bed and the testing method according to claim 1, wherein the test bed comprises a test bed body, a test bed body and a test platform body, wherein the test bed body comprises a test bed body, a test bed body and a test bed body, the test bed body is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a test bed body, and the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a slewing bearing overturning moment testing device, the test bed is provided with a testing device, the test bed is provided with a testing device, and is provided with a testing device, the test bed is provided with a testing device, and is provided with a slewing bearing overturning moment testing device, the test bed is provided with a slewing bearing overturning moment testing device, the test bed is provided with a slewing bearing overturning moment testing device, and is provided with a: the driving transmission part (12) is a straight-tooth gear, and tooth grooves matched with the straight-tooth gear are uniformly formed in the inner wall of the slewing bearing (5) to be tested.
5. The slewing bearing overturning moment loading and testing test bed and the testing method according to claim 1, wherein the test bed comprises a test bed body, a test bed body and a test platform body, wherein the test bed body comprises a test bed body, a test bed body and a test bed body, the test bed body is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a test bed body, and the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device is provided with a test bed body, the test bed is provided with a slewing bearing overturning moment loading device, the test bed is provided with a slewing bearing overturning moment testing device, the test bed is provided with a testing device, the test bed is provided with a testing device, and is provided with a testing device, the test bed is provided with a testing device, and is provided with a slewing bearing overturning moment testing device, the test bed is provided with a slewing bearing overturning moment testing device, the test bed is provided with a slewing bearing overturning moment testing device, and is provided with a: axial acceleration sensors and radial acceleration sensors are arranged on the outer ring of the slewing bearing to be tested (5), four groups of axial acceleration sensors and four groups of radial acceleration sensors are arranged respectively, and the axial acceleration sensors and the radial acceleration sensors are uniformly distributed along the circumferential direction of the outer ring of the slewing bearing to be tested (5) at intervals of 90 degrees.
6. The slewing bearing overturning moment loading and testing test bed and the test method thereof according to claim 1 are characterized in that: the bottom of the base (6) is provided with a shock insulation cushion, and the shock insulation cushion is a rubber shock insulation cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640668.7A CN115046762A (en) | 2022-06-07 | 2022-06-07 | Slewing bearing overturning moment loading and testing test bed and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640668.7A CN115046762A (en) | 2022-06-07 | 2022-06-07 | Slewing bearing overturning moment loading and testing test bed and testing method |
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| Publication Number | Publication Date |
|---|---|
| CN115046762A true CN115046762A (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210640668.7A Pending CN115046762A (en) | 2022-06-07 | 2022-06-07 | Slewing bearing overturning moment loading and testing test bed and testing method |
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| CN (1) | CN115046762A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116858536A (en) * | 2023-07-03 | 2023-10-10 | 徐州丰禾回转支承制造股份有限公司 | Slewing bearing performance test detection device |
-
2022
- 2022-06-07 CN CN202210640668.7A patent/CN115046762A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116858536A (en) * | 2023-07-03 | 2023-10-10 | 徐州丰禾回转支承制造股份有限公司 | Slewing bearing performance test detection device |
| CN116858536B (en) * | 2023-07-03 | 2024-02-23 | 徐州丰禾回转支承制造股份有限公司 | Slewing bearing performance test detection device |
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